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Non-uniform time-to-corrosion initiation in steel reinforced concrete under chloride environment
Different parametric effects on airborne chloride ingress into concrete are studied. Chloride-induced corrosion in reinforced concrete (RC) leads to non-uniform distribution of corrosion products around the rebar perimeter. The present study focuses on corrosion caused by sea-salt particles floating in the air, by considering diffusion as the dominant mode of chloride intrusion into concrete. Detailed parametric study is carried out involving critical chloride content, structural configuration, distance from the coastline, concrete cover thickness and rebar diameter, to understand their effects on chloride ingress into concrete. A specific diffusion path that minimizes time-to-corrosion is identified. Rebar and cover thickness effects on chloride ingress into concrete are emphasized. Qualitative comparison of damage induced on concrete cover as a result of non-uniform corrosion layer formation around rebars is presented through time-to-corrosion initiation (TCI) profiles.
Non-uniform time-to-corrosion initiation in steel reinforced concrete under chloride environment
Different parametric effects on airborne chloride ingress into concrete are studied. Chloride-induced corrosion in reinforced concrete (RC) leads to non-uniform distribution of corrosion products around the rebar perimeter. The present study focuses on corrosion caused by sea-salt particles floating in the air, by considering diffusion as the dominant mode of chloride intrusion into concrete. Detailed parametric study is carried out involving critical chloride content, structural configuration, distance from the coastline, concrete cover thickness and rebar diameter, to understand their effects on chloride ingress into concrete. A specific diffusion path that minimizes time-to-corrosion is identified. Rebar and cover thickness effects on chloride ingress into concrete are emphasized. Qualitative comparison of damage induced on concrete cover as a result of non-uniform corrosion layer formation around rebars is presented through time-to-corrosion initiation (TCI) profiles.
Non-uniform time-to-corrosion initiation in steel reinforced concrete under chloride environment
Ungleichmäßige Zeit zum Korrosionsbeginn bei stahlbewehrtem Beton in Chloridmedien
Muthulingam, S. (author) / Rao, B.N. (author)
Corrosion Science ; 82 ; 304-315
2014
12 Seiten, 9 Bilder, 3 Tabellen, 62 Quellen
Article (Journal)
English
Betonstahl , bewehrter Beton , atmosphärische Korrosion , Meeresatmosphäre , Chlorid , Korrosionseinleitung , Zeitabhängigkeit , Korrosionsprodukt , Konzentrationsverteilung , Parameterstudie , kritischer Wert , konstruktive Einzelheit , Stoffübergang , Feuchteabsorption , mathematische Gleichung , mathematisches Modell , Validierung
Non-uniform time-to-corrosion initiation in steel reinforced concrete under chloride environment
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